diff --git a/core/slice.go b/core/slice.go
index 58202a5b95..8a7bfa4a4b 100644
--- a/core/slice.go
+++ b/core/slice.go
@@ -398,7 +398,8 @@ func (sl *Slice) Append(header *types.WorkObject, domPendingHeader *types.WorkOb
 		sl.hc.chainSideFeed.Send(ChainSideEvent{Blocks: []*types.WorkObject{block}, ResetUncles: false})
 	}
 
-	if subReorg {
+	// Chain head feed is only used by the Zone chains
+	if subReorg && nodeCtx == common.ZONE_CTX {
 		sl.hc.chainHeadFeed.Send(ChainHeadEvent{Block: block})
 	}